v0.21.0 - isHexColor validation function

Added

• New Function: isHexColor() - Validates hexadecimal color codes with comprehensive format support

  • Supports 3-digit (#fff), 6-digit (#ffffff), 4-digit with alpha (#fff8), and 8-digit with alpha (#ffffff80) formats
  • Case-insensitive validation for all formats
  • Pre-compiled regex for optimal performance
  • Bundle size: 118 bytes raw, 103 bytes gzipped
  • 100% test coverage with 32 test cases
  • Use cases: design systems, theme validation, color picker validation, form validation

• Branded Type Integration for HexColor - Full type-safe color handling

  • New HexColor branded type for compile-time safety
  • Type guard: isValidHexColor() for type narrowing
  • Builder function: toHexColor() returns HexColor | null with validation
  • Assertion function: assertHexColor() throws BrandedTypeError on invalid input
  • Unsafe cast: unsafeHexColor() for trusted input (no validation)
  • Integrates seamlessly with existing branded type system

Improved

• Benchmark Infrastructure - Enhanced function extraction for more accurate metrics
  • Added exclusion list for 26 branded type system helpers
  • Separates core utilities (49 functions) from type system infrastructure
  • Prevents metric inflation in bundle size and performance benchmarks
  • More accurate representation of library capabilities
  • Better comparison with other libraries (lodash, es-toolkit)

Documentation

• Updated total function count from 48 to 49 core utilities
• Added isHexColor to documentation site with interactive playground examples
• Updated bundle size references to accurately reflect package size (< 12KB)
• Regenerated benchmark data with new function

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Full Changelog: v0.20.0...v0.21.0